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18 papers · 2 filters
New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
Adam G. Riess, Louis-Gregory Strolger, Stefano Casertano +18
We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over the last 10 billion yea…
Lyman Break Galaxies in the VLT/FORS2 spectroscopic campaign in the GOODS-S field
E. Vanzella, S. Cristiani, M. Dickinson +5
We present initial results from our ongoing campaign of spectroscopic identifications of Lyman--break galaxies (LBGs) at z ~ 4, 5 and 6 with FORS2 at the ESO VLT. The sample of LBG…
Infrared spectral energy distributions of submillimetre galaxies
Alexandra Pope, Ranga-Ram Chary, Mark Dickinson +1
Submillimetre (sub-mm) galaxies have very high infrared (IR) luminosities and are thousands of times more numerous at z~2 than local ultra-luminous IR galaxies. They therefore repr…
Multiaperture Photometry of Galaxies in the Coma Cluster
P. R. Eisenhardt, R. De Propris, A. Gonzalez +3
We present a set of photometry for 745 band selected objects in a region centered on the core of the Coma cluster. This includes 516 galaxi…
Clustering of the IR Background Light with Spitzer: Contribution from Resolved Sources
Ian Sullivan, Asantha Cooray, Ranga-Ram Chary +14
We describe the angular power spectrum of resolved sources at 3.6 microns (L-band) in Spitzer imaging data of the GOODS HDF-N, the GOODS CDF-S, and the NDWFS Bootes field in severa…
Evolution of the Luminosity Function, Star Formation Rate, Morphology and Size of Star-forming Galaxies Selected at Rest-frame 1500A and 2800A
Tomas Dahlen, Bahram Mobasher, Mark Dickinson +4
Using the multiwavelength photometric and spectroscopic data covering the CDF-S obtained within the GOODS, we investigate the rest-frame UV properties of galaxies to z~2.2, includi…
Comparing dynamical and photometric-stellar masses of early-type galaxies at z ~ 1
A. Rettura, P. Rosati, V. Strazzullo +14
The purpose of this study is to explore the relationship between galaxy stellar masses, based on multiwavelength photometry spectral template fitting and dynamical masses based on…
Spitzer 70-micron Source Counts in GOODS-North
D. T. Frayer, M. T. Huynh, R. Chary +7
We present ultra-deep Spitzer 70-micron observations of GOODS-North. For the first time, the turn-over in the 70-micron Euclidean-normalized differential source counts is observed.…
Far-Ultraviolet Imaging of the Hubble Deep Field North: Star Formation in Normal Galaxies at z<1
H. I. Teplitz, B. Siana, T. M. Brown +9
We present far-ultraviolet (FUV) imaging of the Hubble Deep Field North (HDF-N) taken with the Solar Blind Channel of the Advanced Camera for Surveys (ACS/SBC) and the FUV MAMA det…
The Hubble Deep Field North SCUBA Super-map IV - Characterizing submillimetre galaxies using deep Spitzer imaging
Alexandra Pope, Douglas Scott, Mark Dickinson +9
We present SEDs, Spitzer colours, and IR luminosities for 850 micron selected galaxies in the GOODS-N field. Using the deep Spitzer Legacy images and new data and reductions of the…
Star Formation History of the Hubble Ultra Deep Field: Comparison with the HDFN
Rodger I. Thompson, Daniel Eisenstein, Xiaohui Fan +3
We use the NICMOS Treasury and ACS HUDF images to measure the extinction corrected star formation history for 4681 galaxies in the region common to both images utilizing the star f…
Evidence for TP-AGB stars in high redshift galaxies, and their effect on deriving stellar population parameters
C. Maraston, E. Daddi, A. Renzini +5
We explore the effects of stellar population models on estimating star formation histories, ages and masses of high redshift galaxies. The focus is on the Thermally-Pulsing Asympto…
GMASS, Unveiling Distant Massive Galaxies with Spitzer
J. D. Kurk, A. Cimatti, E. Daddi +11
One of the main questions of galaxy formation is how and when galaxies assembled their mass. Observations suggest that most mass assembly and star formation occured at 1 < z < 3. H…
The Stellar Masses and Star Formation Histories of Galaxies at z ~ 6: Constraints from Spitzer Observations in the Great Observatories Origins Deep Survey
Haojing Yan, Mark Dickinson, Mauro Giavalisco +3
Using the deep Spitzer IRAC observations of the Great Observatories Origins Deep Survey (GOODS), we study the stellar masses and star formation histories of galaxies at z ~ 6. Our…
The GOODS-North Radio Galaxies: On the Origin of the Radio Emission
G. Morrison, M. Dickinson, F. Owen +7
We report on a preliminary study concerning the origin of radio emission within radio galaxies at L(1.4GHz)>1E24 W/Hz in the GOODS-N field. In the local universe, Condon et al. (20…
Using Spitzer to probe the nature of submillimetre galaxies in GOODS-N
Alexandra Pope, Douglas Scott, Mark Dickinson +4
How does the submm galaxy population detected by SCUBA fit into galaxy evolution? How do these rare starbursting systems, which contribute significantly to high redshift star-forma…
Mid infrared properties of distant infrared luminous galaxies
D Marcillac, D. Elbaz, R. R. Chary +3
We present evidence that the mid infrared (MIR) is a good tracer of the total infrared luminosity, L(IR), and star formation rate (SFR), of galaxies up to z 1.3. We use deep MIR im…
The Great Observatories Origins Deep Survey VLT/FORS2 Spectroscopy in the GOODS-South Field: Part II
E. Vanzella, S. Cristiani, M. Dickinson +16
We present the second campaign of the ESO/GOODS program of spectroscopy of faint galaxies in the GOODS-South field. Objects were selected as candidates for VLT/FORS2 observations p…